Car Nitro & Gas Engines Discuss all aspects of Nitro and Gas rc car engines here!

breaking-in

Reply
Old 04-08-2004, 02:46 PM
  #1
samcim
Thread Starter
 
samcim's Avatar
 
Join Date: Apr 2004
Location: Wales, UK,
Posts: 414
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default breaking-in

hi guys, any 1 know where the breaking-in sticky thread is? im getting a Ofna Violator soon and and wanna know the best way to break it in. the one i seen was someone was heating the heatsink up to 200-220F, starting it, giving it WOT ( on a bench)and lean it out till it stays @ 220-230F for half a tank then let it cool (BDC)and do this 3 times or so then go and do some 1/4 revs for few tanks then half revs for few tanks and then full throttle burts for few tanks making sure it stays roughly 220-230F while doing this.......... would this be a good proccess for "breaking-in" the engine

thanks in advance!!
samcim is offline  
Reply With Quote
Old 04-08-2004, 03:15 PM
  #2
Homebrewer
 
Join Date: Dec 2001
Location: Colorado Springs, CO
Posts: 1,359
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: breaking-in

An engine should NEVER be run without a load on the engine. For car engines, this means the engine should never be run at wide open throttle (WOT) when it is lifted off of the ground. You can overspeed the engine doing this and cause serious engine damage.

However, I don't believe in idling an engine to break it in which is common in the car community. Here is what I do which is completely different then what many car manufacturers state. I believe that they are wrong and I have never ruined an engine from breaking it in this way.

Start engine,
Tune engine so the engine is running just past the 4-2 stroke point at wide open throttle (with it running on a smooth surface such as asphalt or concrete). The engine will be hot enough not to damage it from 4 stroking but rich enough to keep it from overheating. It will not however be very fast or perform like it should-thats ok, its not broken in.

Find a nice parking lot and drive it for a couple of tanks where you go to WOT and the let it coast at a high idle and repeat. With each tank increase the amount of time at WOT and decrease the coasting/cooldown time. With each tank, you may want to slightly lean mixture until you can maintain a temp that doesn't exceed 250 deg F when run at WOT for extended periods.

You'll have more fun with your new car and breakin instead of sitting there watching a car idle and waste gas. One word of caution, KEEP an eye out on the temps and make sure it doesn't overheat-exceed 250 deg F.
Homebrewer is offline  
Reply With Quote
Old 04-08-2004, 03:21 PM
  #3
samcim
Thread Starter
 
samcim's Avatar
 
Join Date: Apr 2004
Location: Wales, UK,
Posts: 414
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: breaking-in

sounds good , any one else recommend this>?
samcim is offline  
Reply With Quote
Old 04-08-2004, 03:38 PM
  #4
ShoestringRacer
 
Join Date: Mar 2002
Location: ,
Posts: 904
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: breaking-in

Yes that is correct but I would add one thing which he doesn't state. After each run of 2-3 minutes, you should shut down and let the engine cool off completely. Then do another 2-3 minute run and cool down completely. After 10-15 times doing this cycle tune the engine and use as you normally would. But yes his info is very good overall. Always avoid idling and overly rich 4 stroking operation, (which is cold operation)
ShoestringRacer is offline  
Reply With Quote
Old 10-16-2010, 08:50 PM
  #5
RCtoughGuy
 
Join Date: Oct 2010
Location: , NS, CANADA
Posts: 40
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: breaking-in

the temperature cycling method is the best, just google it


Quote:
ORIGINAL: samcim

hi guys, any 1 know where the breaking-in sticky thread is? im getting a Ofna Violator soon and and wanna know the best way to break it in. the one i seen was someone was heating the heatsink up to 200-220F, starting it, giving it WOT ( on a bench)and lean it out till it stays @ 220-230F for half a tank then let it cool (BDC)and do this 3 times or so then go and do some 1/4 revs for few tanks then half revs for few tanks and then full throttle burts for few tanks making sure it stays roughly 220-230F while doing this.......... would this be a good proccess for "breaking-in" the engine

thanks in advance!!
RCtoughGuy is offline  
Reply With Quote
Old 02-27-2012, 06:18 PM
  #6
BulgarianBullwhip
 
Join Date: Feb 2012
Location: , AZ
Posts: 170
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: breaking-in

that thread does not exist
BulgarianBullwhip is offline  
Reply With Quote
Old 02-27-2012, 08:03 PM
  #7
BulgarianBullwhip
 
Join Date: Feb 2012
Location: , AZ
Posts: 170
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: breaking-in

I gave advice, but it's gone now, too bad
BulgarianBullwhip is offline  
Reply With Quote
Old 02-27-2012, 08:37 PM
  #8
BulgarianBullwhip
 
Join Date: Feb 2012
Location: , AZ
Posts: 170
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: breaking-in

did I comment in this one?
BulgarianBullwhip is offline  
Reply With Quote
Old 03-17-2012, 05:01 PM
  #9
RectalExam
 
Join Date: Mar 2012
Location: , AK
Posts: 124
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: breaking-in

bump
RectalExam is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 09:50 AM.